Nobelium vs Lawrencium
Pick up to 3 elements and see how they stack up.
| Property | Nobelium | Lawrencium |
|---|---|---|
| Atomic number | 102 | 103 |
| Atomic mass | 259 | 266 |
| Electronegativity | 1.3 | 1.3 |
| Melting point | 1,100 K (826.8 °C) | 1,900 K (1,626.8 °C) |
| Boiling point | — | — |
| Density | — | — |
| Atomic radius | — | — |
| Ionization energy | 6.65 eV | — |
| Discovered | 1958 | 1961 |
| Category | Actinide | Actinide |
| State at room temp. | Solid | Solid |
| Block | f | f |
| Group | — | — |
| Period | 7 | 7 |
| Valence electrons | 2 | 3 |
| Common charges | +2, +3 | +3 |
| Electron configuration | [Rn] 5f14 7s2 | [Rn] 5f14 7s2 7p1 |